KOCHOYA black 33L expandable commuter backpack
KOCHOYA commuter backpack expanded capacity
KOCHOYA 17-inch laptop backpack organization
KOCHOYA commuter backpack pocket layout
KOCHOYA business backpack carry detail
KOCHOYA black travel backpack feature detail

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Bag

KOCHOYA 33L Expandable Commuter Backpack — Black

A 21–33 L work-to-travel backpack with protected device storage.

¥6,200

Available shipping services and estimated delivery are shown at checkout.

Specifications
Capacity
21–33 L
Dimensions
46 × 32 × 15–25 cm
Weight
Approx. 1 kg
Device fit
Laptops up to 17 in; tablets up to 11 in

The KOCHOYA 33L Expandable Commuter Backpack is a black laptop backpack for workdays, school, business travel and overnight trips. It stays slim at 21 L for daily commuting and expands to 33 L when you need more packing space.

Best for

  • Commuters carrying a laptop, tablet, documents, chargers and personal items.
  • Short business trips where one expandable backpack can replace an extra carry bag.

Key specifications

  • Capacity: 21-33 L expandable storage.
  • Dimensions: 46 x 32 x 15-25 cm.
  • Weight: approx. 1 kg.
  • Device fit: laptops up to 17 in and tablets up to 11 in.
  • Organization: 11 pockets.

Materials and care

The backpack uses PVC textile with a PU coating, a padded device compartment, breathable 3D mesh on the back panel and shoulder straps, and an external USB pass-through for your own power bank. The coated fabric is water-resistant for everyday use but is not designed for submersion.

Buyer questions

Does the backpack include a power bank?

No. The USB pass-through connects to your own power bank.

Can it fit a 17-inch laptop?

Yes. The padded device compartment is designed for laptops up to 17 inches, with separate tablet storage up to 11 inches.

  • Expandable 21–33 L capacity
  • Eleven pockets
  • Padded 17-inch laptop and 11-inch tablet storage
  • Backpack, shoulder and crossbody carry
  • External USB pass-through; power bank not included
  • Suitcase pass-through strap
Materials & construction

PVC textile with a PU coating, padded device compartment and breathable 3D mesh back panel and shoulder straps. Water-resistant, not submersible.

Shipping & returns
Delivery dates and available services are calculated at checkout. Unused items can be returned under the store's published return policy; check compatibility before removing protective packaging.

Material color and grain can vary slightly between production batches.